Selection of electrodes for the ˝in situ˝ electrical resistivity measurements of molten aluminium

  • Mitja Petrič University of Ljubljana, Faculty of Natural Sciences and Engineering
  • Sebastjan Kastelic University of Ljubljana, Faculty of Natural Sciences and Engineering Institute for Foundry and Heat Treatment
  • Primož Mrvar University of Ljubljana, Faculty of Natural Sciences and Engineering

Abstract


The aim of this paper is the selections of proper electrode material for four-probe technique electrical resistivity measurement of aluminium and aluminium alloys. The biggest problem of electrodes is oxidation during measurement causing high contact resistance and giving wrong results. Various materials have been tested and aluminium electrodes have been chosen. Advantage of aluminium electrodes is that they are melted in specimen right after the pouring and causing no interface which is resulting with any contact resistance. The device together with measuring cell for ˝in situ˝ measurement of electrical resistivity was developed using four-probe DC technique.

Author Biographies

Mitja Petrič, University of Ljubljana, Faculty of Natural Sciences and Engineering
Department of materials and metallurgy
Primož Mrvar, University of Ljubljana, Faculty of Natural Sciences and Engineering
Department of materials and metallurgy

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Published
2014/02/10
How to Cite
Petrič, M., Kastelic, S., & Mrvar, P. (2013). Selection of electrodes for the ˝in situ˝ electrical resistivity measurements of molten aluminium. Journal of Mining and Metallurgy, Section B: Metallurgy, 49(3), 279. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/3249
Issue
Vol. 49 No. 3 (2013)
Section
Original Scientific Paper

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